URL Encoder & Decoder

Instant • Secure • 100% Offline • Nothing Leaves Your Device


Click Encode or Decode to see the result

When You'll Need URL Encoding

Building Query Strings

Safely pass search terms, filters, or user input in URLs without breaking links.

API Requests

Properly encode parameters when calling REST APIs, webhooks, or third-party services.

Sharing Links

Convert spaces, &, ?, # and special characters so links work everywhere.

Fixing Broken URLs

Decode malformed or double-encoded URLs to see the original text.

International Text

Encode emojis, accents, Cyrillic, Chinese, Arabic — all supported perfectly.

Debugging & Testing

Quickly test how browsers and servers interpret encoded vs decoded data.

Frequently Asked Questions

What is URL encoding?

URL encoding (percent-encoding) converts special characters into % followed by their hexadecimal code so they can be safely transmitted in URLs.

Why can't I just use spaces in URLs?

Spaces and many symbols break URLs. They must be replaced (space becomes %20 or +) to comply with web standards.

Is this tool really 100% private?

Yes! All encoding/decoding happens in your browser using JavaScript. No data is sent to any server.

Does it support emojis and non-Latin characters?

Absolutely. Modern encodeURIComponent() properly handles Unicode including emojis.

Difference between encodeURI vs encodeURIComponent?

This tool uses encodeURIComponent() — safer for query parameters. encodeURI() leaves & ? = unescaped.

Can I use this offline?

Yes! Bookmark or add to home screen — works forever without internet after first load.